Improved Oxygen Evolution Kinetics and Surface States Passivation of Ni-B i Co-Catalyst for a Hematite Photoanode | Zendy

Ke Dang | Zendy; Tuo Wang | Zendy; Chengcheng Li | Zendy; Jijie Zhang | Zendy; Shanshan Liu | Zendy; Jinlong Gong | Zendy

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Improved Oxygen Evolution Kinetics and Surface States Passivation of Ni-B i Co-Catalyst for a Hematite Photoanode

Author(s) -

Ke Dang,

Tuo Wang,

Chengcheng Li,

Jijie Zhang,

Shanshan Liu,

Jinlong Gong

Publication year - 2017

Publication title -

engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.376

H-Index - 45

eISSN - 2096-0026

pISSN - 2095-8099

DOI - 10.1016/j.eng.2017.03.005

Subject(s) - hematite , passivation , photocurrent , oxygen evolution , catalysis , nickel , materials science , boron , kinetics , oxygen , reversible hydrogen electrode , anode , electrode , photoelectrochemistry , chemical engineering , inorganic chemistry , chemistry , electrochemistry , nanotechnology , metallurgy , working electrode , optoelectronics , layer (electronics) , biochemistry , physics , organic chemistry , quantum mechanics , engineering

This paper describes the combinational surface kinetics enhancement and surface states passivation of nickel-borate (Ni-Bi) co-catalyst for a hematite (Fe2O3) photoanode. The Ni-Bi-modified Fe2O3 photoanode exhibits a cathodic onset potential shift of 230 mV and a 2.3-fold enhancement of the photocurrent at 1.23 V, versus the reversible hydrogen electrode (RHE). The borate (Bi) in the Ni-Bi film promotes the release of protons for the oxygen evolution reaction (OER)

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